公开(公告)号：US5358929A

公开(公告)日：1994-10-25

申请号：US19976

申请日：1993-02-19

申请人： Jun Fujikami ,  Kenichi Sato ,  Nobuhiro Shibuta ,  Hidehito Mukai ,  Takeshi Kato

发明人： Jun Fujikami ,  Kenichi Sato ,  Nobuhiro Shibuta ,  Hidehito Mukai ,  Takeshi Kato

IPC分类号： H01F6/06 ,  H01L39/02 ,  H01R4/68 ,  H01R43/00

CPC分类号： H01F6/065 ,  H01L39/02 ,  H01R4/68 ,  Y10S505/925

摘要： Disclosed herein is a method which enables permanent current junction of a tape-type oxide superconducting wire and suppresses reduction of its critical current. An end portion of a tape-type wire (10) to be joined is removed to expose oxide superconductor filaments. Another tape-type wire (10') to be joined with the wire (10) is processed in a similar manner. The tape-type wires (10, 10') are so superposed that the surfaces exposing the filaments face with each other, and the superposed portions are pressed in a direction perpendicular to principal surfaces of the tapes and heat treated at a temperature of 800.degree. to 900.degree. C., to be completely joined with each other.

摘要翻译： 这里公开了一种能够实现带状氧化物超导线的永久电流接合并且抑制其临界电流的降低的方法。 去除要连接的带状导线（10）的端部以暴露氧化物超导体细丝。 与线（10）接合的另一条带状线（10'）以类似的方式被处理。 带状电线（10,10'）重叠，使得暴露于灯丝的表面彼此面对，并且叠置部分沿垂直于带的主表面的方向被按压并在800℃的温度下进行热处理 至900℃，彼此完全接合。

公开(公告)号：US5932523A

公开(公告)日：1999-08-03

申请号：US326298

申请日：1994-10-19

申请人： Jun Fujikami ,  Nobuhiro Shibuta ,  Kenichi Sato ,  Tsukushi Hara ,  Hideo Ishii

发明人： Jun Fujikami ,  Nobuhiro Shibuta ,  Kenichi Sato ,  Tsukushi Hara ,  Hideo Ishii

IPC分类号： H01B12/12 ,  C04B35/00 ,  H01B12/02 ,  H01B12/06 ,  H01L39/14 ,  H01L39/24

CPC分类号： H01L39/143 ,  H01L39/248

摘要： In order to provide a flexible oxide superconducting cable conductor which is reduced in ac loss, tape-shaped multifilamentary superconducting wires covered with a stabilizing metal are spirally wound on a flexible former. Each of the multifilamentary superconducting wires has a plurality of filaments. The filament contains an oxide superconductor. The superconducting wires are preferably wound on the former at a bending strain of not more than 0.3 %. In winding on the former, a prescribed number of tape-shaped multifilamentary superconducting wires are wound on a core member in a side-by-side manner, to form a first layer. Then, an insulating layer is provided on the first layer. This insulating layer can be formed by an insulating tape. A prescribed number of tape-shaped superconducting multifilamentary wires are wound on the insulating layer in a side-by-side manner, to form a second layer. The insulating layer is adapted to reduce ac loss of the conductors. When the former is made of a metal, it is more preferable to provide an insulating layer between the former and the multifilamentary superconducting wires.

摘要翻译： 为了提供减少交流损耗的柔性氧化物超导电缆导体，用稳定金属覆盖的带状多丝超导线被螺旋缠绕在柔性成形器上。 每根多丝超导线具有多根长丝。 灯丝包含氧化物超导体。 超导线优选以不大于0.3％的弯曲应变缠绕在前者上。 在卷绕在前者上时，规定数量的带状复丝超导线以并列方式卷绕在芯部件上，形成第一层。 然后，在第一层上设置绝缘层。 该绝缘层可以由绝缘带形成。 规定数量的带状超导复丝线并排缠绕在绝缘层上，形成第二层。 绝缘层适于减少导体的交流损耗。 当前者由金属制成时，更优选在前者和多丝超导线之间设置绝缘层。

公开(公告)号：US06215072B1

公开(公告)日：2001-04-10

申请号：US08326178

申请日：1994-10-19

申请人： Jun Fujikami ,  Nobuhiro Shibuta ,  Kenichi Sato ,  Tsukushi Hara ,  Hideo Ishii

发明人： Jun Fujikami ,  Nobuhiro Shibuta ,  Kenichi Sato ,  Tsukushi Hara ,  Hideo Ishii

IPC分类号： H01B1200

CPC分类号： H01L39/248 ,  H01L39/143 ,  Y10S505/887 ,  Y10T29/49014

摘要： Provided is an oxide superconducting conductor consisting of a plurality of metal-covered multifilamentary superconducting wires which are assembled with each other. Bending is applied to the superconducting conductor for improving its critical current density. It is possible to obtain a compact superconducting conductor having higher capacity, since its critical current density is increased by such application of bending.

摘要翻译： 提供一种氧化物超导导体，其由多个彼此组装的金属覆盖的多丝超导线组成。 弯曲应用于超导导体以提高其临界电流密度。 可以获得具有较高容量的紧凑型超导导体，因为其临界电流密度通过这种施加弯曲而增加。

公开(公告)号：US06305069B1

公开(公告)日：2001-10-23

申请号：US08627281

申请日：1996-04-04

申请人： Jun Fujikami ,  Nobuhiro Saga ,  Kazuya Ohmatsu ,  Kenichi Sato

发明人： Jun Fujikami ,  Nobuhiro Saga ,  Kazuya Ohmatsu ,  Kenichi Sato

IPC分类号： H01L3924

CPC分类号： H01F6/06 ,  C23C26/00 ,  C23C30/00 ,  H01L39/143 ,  H01L39/248 ,  Y10S505/701 ,  Y10S505/702 ,  Y10S505/703 ,  Y10S505/704 ,  Y10T29/49014

摘要： Provided are an oxide superconducting wire which maintains a high critical current density and has a small current drift with small ac loss when the same carries an alternating current and a method of preparing the same, and a cable conductor which is formed by assembling such oxide superconducting wires. The oxide superconducting wire is a flat-molded stranded wire which is formed by twisting a plurality of metal-coated strands consisting of an oxide superconductor, and is characterized in that the flat-molded stranded wire has a rectangular sectional shape, and a section of each strand forming the flat-molded stranded wire has an aspect ratio (W1/T1) of at least 2. The method of preparing this oxide superconducting wire comprises the steps of preparing a stranded wire by twisting a plurality of strands, each of which is formed by metal-coating an oxide superconductor or raw material powder therefor, flat-molding the prepared stranded wire, and repeating rolling and a heat treatment of at least 800° C. on the flat molded stranded wire a plurality of times.

摘要翻译： 提供一种氧化物超导线材，其保持高的临界电流密度，并且当相同的交流电流具有小的交流损耗时具有小的电流漂移及其制备方法，以及通过组装这种氧化物超导体形成的电缆导体 电线 氧化物超导线是通过扭转由氧化物超导体组成的多个金属涂敷线形成的扁平成形绞合线，其特征在于，所述扁平成形绞线具有矩形截面形状，并且部分 形成平线状绞合线的每条线的纵横比（W1 / T1）至少为2.制造该氧化物超导线的方法包括以下步骤：通过扭绞多条绞线来制备绞线， 通过金属涂覆氧化物超导体或其原料粉末形成，对制备的绞线进行平直成型，并且在扁平成型绞合线上多次重复进行至少800℃的滚压和热处理。

公开(公告)号：US20100227765A1

公开(公告)日：2010-09-09

申请号：US11990147

申请日：2006-09-22

申请人： Eisaku Ueno ,  Takeshi Kato ,  Jun Fujikami

发明人： Eisaku Ueno ,  Takeshi Kato ,  Jun Fujikami

IPC分类号： G01N27/00 ,  G01R19/00

CPC分类号： G01R33/1246 ,  G01R33/072

摘要： A method of measuring the critical current value of a superconducting wire comprises the step of measuring first to mth (m denotes an integer of at least 2) current values (I1, I2, . . . , Im) and first to mth voltage values (V1, V2, . . . , Vm) corresponding to the respective ones of the first to mth current values. The first current value I1 and the first voltage value V1 are measured by retaining the current fed from a constant current source to the superconducting wire in a state set to a first set value I1a for a constant time and thereafter measuring the current flowing through the superconducting wire and a voltage generated in the superconducting wire. The kth (k denotes an integer satisfying 2≦k≦m) current value Ik and the kth voltage value Vk are measured by retaining the current fed from the constant current source to the superconducting wire in a state set to a kth set value Ika higher than a (k−1)th set value for the constant time and thereafter measuring the current flowing through the superconducting wire and the voltage generated in the superconducting wire. Thus, a correct critical current value can be measured.

摘要翻译： 测量超导线的临界电流值的方法包括以下步骤：首先测量（m表示至少为2的整数）电流值（I1，I2，...，Im）和第一至第m电压值 V1，V2，...，Vm）对应于第一至第m电流值中的相应值。 第一电流值I1和第一电压值V1通过将从恒定电流源馈送的电流保持在设定为第一设定值I1a的状态达到恒定时间，然后测量流过超导的电流来测量超导线 电线和在超导线中产生的电压。 第k个（k表示满足2＆nlE; k＆nlE; m）的整数，电流值Ik和第k个电压值Vk是通过将恒定电流源馈送到超导线的电流保持在设定为第k个设定值Ika的状态下来测量的 比第（k-1）个恒定时间的设定值，然后测量流过超导线的电流和在超导线中产生的电压。 因此，可以测量正确的临界电流值。

公开(公告)号：US06552260B2

公开(公告)日：2003-04-22

申请号：US09758261

申请日：2001-01-12

申请人： Jun Fujikami ,  Toru Okazaki ,  Takato Masuda ,  Takeshi Kato ,  Hiroyasu Yumura ,  Yoshihisa Takahashi ,  Kimiyoshi Matsuo ,  Shoichi Honjo ,  Tomoo Mimura

发明人： Jun Fujikami ,  Toru Okazaki ,  Takato Masuda ,  Takeshi Kato ,  Hiroyasu Yumura ,  Yoshihisa Takahashi ,  Kimiyoshi Matsuo ,  Shoichi Honjo ,  Tomoo Mimura

IPC分类号： H01B1202

CPC分类号： H01B12/00 ,  Y02E40/64 ,  Y10T29/49014

摘要： A superconducting cable includes a core material, conductor layers formed by means of helically winding superconducting wires around the core material, electrically insulating layers, and magnetic shielding layers formed by means of helically winding superconducting wires around each of the electrically shielding layers. The superconducting wire is wound at the shortest pitch on the outermost conductor layer and is wound at the longest pitch on the outermost magnetic shielding layer.

摘要翻译： 超导电缆包括芯材料，通过螺旋缠绕芯材周围的超导线形成的导体层，电绝缘层和通过围绕每个电屏蔽层螺旋缠绕超导线形成的磁屏蔽层。 超导线以最短的间距缠绕在最外面的导体层上，并以最长的间距缠绕在最外面的磁屏蔽层上。

公开(公告)号：US06313408B1

公开(公告)日：2001-11-06

申请号：US08766984

申请日：1996-12-16

申请人： Jun Fujikami ,  Kenichi Sato ,  Tsukushi Hara ,  Hideo Ishii

发明人： Jun Fujikami ,  Kenichi Sato ,  Tsukushi Hara ,  Hideo Ishii

IPC分类号： H01B1200

CPC分类号： H01B12/02 ,  Y02E40/641

摘要： Provided is an insulated oxide superconducting cable conductor having a high critical current and a high critical current density. The insulated oxide superconducting cable conductor comprises an elongated former, a plurality of tape-shaped multifilamentary oxide superconducting wires which are wound on the former at a bending strain factor of not more than 0.5%, and a spirally wound tape-shaped insulating material covering the tape-shaped multifilamentary oxide superconducting wires. The tape-shaped multifilamentary superconducting wires are superposed on the former in layers, whereby stabilizing materials of the superposed superconducting wires are in contact with each other. The tape-shaped insulating material consists essentially of a material which is contracted at a thermal contraction rate of at least three times that of the tape-shaped multifilamentary wires by cooling from a temperature of 298 K to that of 77 K. The tape-shaped insulating material can apply a pressure to the superposed multifilamentary superconducting wires toward the former while improving electrical contact between the superposed multifilamentary superconducting wires by cooling in employment. The former can be formed of a flexible tube.

摘要翻译： 提供了具有高临界电流和高临界电流密度的绝缘氧化物超导电缆导体。 绝缘氧化物超导电缆导体包括细长的成形器，多个带状复丝氧化物超导线，其以不大于0.5％的弯曲应变系数缠绕在前者上，以及螺旋卷绕的带状绝缘材料， 带状复丝氧化物超导线。 带状多丝超导线叠层叠在一起，由此叠加的超导线的稳定材料彼此接触。 带状绝缘材料基本上由以298K的温度冷却到77K的方式以至少三倍于带状复丝线的热收缩率收缩的材料组成。带状绝缘材料 绝缘材料可以向重叠的多丝超导线施加压力，同时通过就业冷却改善叠加的多丝超导线之间的电接触。 前者可以由柔性管形成。

公开(公告)号：US07784169B2

公开(公告)日：2010-08-31

申请号：US10569829

申请日：2005-02-17

申请人： Jun Fujikami ,  Takeshi Kato

发明人： Jun Fujikami ,  Takeshi Kato

IPC分类号： H01B12/00 ,  H01B13/00

CPC分类号： H01L39/248 ,  Y10T29/49014

摘要： A method of manufacturing a superconducting wire includes the step of drawing a wire formed by coating raw material powder for a superconductor with a metal, the step of first rolling a multifilamentary wire after the step of drawing, and the step of first sintering the multifilamentary wire 1 after the step of the first rolling. At least one of an interval between the step of drawing and the step of the first rolling and an interval between the step of the first rolling and the step of the first sintering is less than seven days. With this method, a superconducting wire having high and uniform performance can be obtained.

摘要翻译： 制造超导线的方法包括以下步骤：通过用金属涂覆用于超导体的原料粉末而形成的线，在拉拔步骤之后首先轧制多丝线的步骤，以及首先烧结多丝线 1后第一次滚动的步骤。 拉伸步骤与第一次轧制步骤之间的间隔和第一次轧制步骤与第一次烧结步骤之间的间隔中的至少一个小于七天。 通过这种方法，可以获得具有高且均匀性能的超导线。

公开(公告)号：US20070060481A1

公开(公告)日：2007-03-15

申请号：US10569829

申请日：2005-02-17

申请人： Jun Fujikami ,  Takeshi Kato

发明人： Jun Fujikami ,  Takeshi Kato

IPC分类号： H01L39/24

CPC分类号： H01L39/248 ,  Y10T29/49014

摘要： A method of manufacturing a superconducting wire includes the step of drawing a wire formed by coating raw material powder for a superconductor with a metal (S6), the step of first rolling (S8) rolling a multifilamentary wire after the step of drawing (S6), and the step of first sintering (S10) sintering the multifilamentary wire 1 after the step of the first rolling (S8). At least one of an interval between the step of drawing (S6) and the step of the first rolling (S8) and an interval between the step of the first rolling (S8) and the step of the first sintering (S10) is less than seven days. With this method, a superconducting wire having high and uniform performance can be obtained.

摘要翻译： 制造超导线的方法包括以下步骤：通过用金属（S 6）涂覆用于超导体的原料粉末形成的线，在拉拔步骤之后第一次轧制（S8）滚动多丝线的步骤 S 6），以及在第一次轧制步骤之后第一次烧结（S10）烧结复丝1的步骤（S8）。 拉伸步骤（S6）和第一次轧制步骤（S8）之间的间隔和第一轧制步骤（S8）与第一次烧结步骤（S10）之间的间隔中的至少一个 ）不到七天。 通过这种方法，可以获得具有高且均匀性能的超导线。

公开(公告)号：US06566609B2

公开(公告)日：2003-05-20

申请号：US09954577

申请日：2001-09-18

申请人： Jun Fujikami ,  Nobuhiro Saga ,  Kazuya Ohmatsu ,  Kenichi Sato

发明人： Jun Fujikami ,  Nobuhiro Saga ,  Kazuya Ohmatsu ,  Kenichi Sato

IPC分类号： H01B1200

CPC分类号： H01F6/06 ,  C23C26/00 ,  C23C30/00 ,  H01L39/143 ,  H01L39/248 ,  Y10S505/701 ,  Y10S505/702 ,  Y10S505/703 ,  Y10S505/704 ,  Y10T29/49014

摘要： Provided are an oxide superconducting wire which maintains a high critical current density and has a small current drift with small ac loss when the same carries an alternating current and a method of preparing the same, and a cable conductor which is formed by assembling such oxide superconducting wires. The oxide superconducting wire is a flat-molded stranded wire which is formed by twisting a plurality of metal-coated strands consisting of an oxide superconductor, and is characterized in that the flat-molded stranded wire has a rectangular sectional shape, and a section of each strand forming the flat-molded stranded wire has an aspect ratio (W1/T1) of at least 2. The method of preparing this oxide superconducting wire comprises the steps of preparing a stranded wire by twisting a plurality of strands, each of which is formed by metal-coating an oxide superconductor or raw material powder therefor, flat-molding the prepared stranded wire, and repeating rolling and a heat treatment of at least 800° C. on the flat molded stranded wire a plurality of times.